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// See LICENSE for license details.
package firrtlTests
import java.io._
import com.typesafe.scalalogging.LazyLogging
import scala.sys.process._
import org.scalatest._
import org.scalatest.prop._
import scala.io.Source
import firrtl._
import firrtl.Parser.IgnoreInfo
import firrtl.Annotations.AnnotationMap
// This trait is borrowed from Chisel3, ideally this code should only exist in one location
trait BackendCompilationUtilities {
/** Create a temporary directory with the prefix name. Exists here because it doesn't in Java 6.
*/
def createTempDirectory(prefix: String): File = {
val temp = File.createTempFile(prefix, "")
if (!temp.delete()) {
throw new IOException(s"Unable to delete temp file '$temp'")
}
if (!temp.mkdir()) {
throw new IOException(s"Unable to create temp directory '$temp'")
}
temp
}
/** Copy the contents of a resource to a destination file.
*/
def copyResourceToFile(name: String, file: File) {
val in = getClass().getResourceAsStream(name)
if (in == null) {
throw new FileNotFoundException(s"Resource '$name'")
}
val out = new FileOutputStream(file)
Iterator.continually(in.read).takeWhile(-1 !=).foreach(out.write)
out.close()
}
def makeHarness(template: String => String, post: String)(f: File): File = {
val prefix = f.toString.split("/").last
val vf = new File(f.toString + post)
val w = new FileWriter(vf)
w.write(template(prefix))
w.close()
vf
}
/** Generates a Verilator invocation to convert Verilog sources to C++
* simulation sources.
*
* The Verilator prefix will be V$dutFile, and running this will generate
* C++ sources and headers as well as a makefile to compile them.
*
* Verilator will automatically locate the top-level module as the one among
* all the files which are not included elsewhere. If multiple ones exist,
* the compilation will fail.
*
* @param dutFile name of the DUT .v without the .v extension
* @param dir output directory
* @param vSources list of additional Verilog sources to compile
* @param cppHarness C++ testharness to compile/link against
*/
def verilogToCpp(
dutFile: String,
dir: File,
vSources: Seq[File],
cppHarness: File): ProcessBuilder =
Seq("verilator",
"--cc", s"$dutFile.v") ++
vSources.map(file => Seq("-v", file.toString)).flatten ++
Seq("--assert",
"--Wno-fatal",
"--trace",
"-O2",
"--top-module", dutFile,
"+define+TOP_TYPE=V" + dutFile,
"-CFLAGS", s"""-Wno-undefined-bool-conversion -O2 -DTOP_TYPE=V$dutFile -include V$dutFile.h""",
"-Mdir", dir.toString,
"--exe", cppHarness.toString)
def cppToExe(prefix: String, dir: File): ProcessBuilder =
Seq("make", "-C", dir.toString, "-j", "-f", s"V${prefix}.mk", s"V${prefix}")
def executeExpectingFailure(
prefix: String,
dir: File,
assertionMsg: String = "Assertion failed"): Boolean = {
var triggered = false
val e = Process(s"./V${prefix}", dir) !
ProcessLogger(line => {
triggered = triggered || line.contains(assertionMsg)
System.out.println(line)
})
triggered
}
def executeExpectingSuccess(prefix: String, dir: File): Boolean = {
!executeExpectingFailure(prefix, dir)
}
}
trait FirrtlRunners extends BackendCompilationUtilities {
def parse(str: String) = Parser.parse(str.split("\n").toIterator, IgnoreInfo)
lazy val cppHarness = new File(s"/top.cpp")
/** Compile a Firrtl file
*
* @param prefix is the name of the Firrtl file without path or file extension
* @param srcDir directory where all Resources for this test are located
* @param annotations Optional Firrtl annotations
*/
def compileFirrtlTest(
prefix: String,
srcDir: String,
customTransforms: Seq[Transform] = Seq.empty,
annotations: AnnotationMap = new AnnotationMap(Seq.empty)): File = {
val testDir = createTempDirectory(prefix)
copyResourceToFile(s"${srcDir}/${prefix}.fir", new File(testDir, s"${prefix}.fir"))
Driver.compile(
s"$testDir/$prefix.fir",
s"$testDir/$prefix.v",
new VerilogCompiler(),
Parser.IgnoreInfo,
customTransforms,
annotations)
testDir
}
/** Execute a Firrtl Test
*
* @param prefix is the name of the Firrtl file without path or file extension
* @param srcDir directory where all Resources for this test are located
* @param verilogPrefixes names of option Verilog resources without path or file extension
* @param annotations Optional Firrtl annotations
*/
def runFirrtlTest(
prefix: String,
srcDir: String,
verilogPrefixes: Seq[String] = Seq.empty,
customTransforms: Seq[Transform] = Seq.empty,
annotations: AnnotationMap = new AnnotationMap(Seq.empty)) = {
val testDir = compileFirrtlTest(prefix, srcDir, customTransforms, annotations)
val harness = new File(testDir, s"top.cpp")
copyResourceToFile(cppHarness.toString, harness)
// Note file copying side effect
val verilogFiles = verilogPrefixes map { vprefix =>
val file = new File(testDir, s"$vprefix.v")
copyResourceToFile(s"$srcDir/$vprefix.v", file)
file
}
verilogToCpp(prefix, testDir, verilogFiles, harness).!
cppToExe(prefix, testDir).!
assert(executeExpectingSuccess(prefix, testDir))
}
}
trait FirrtlMatchers {
// Replace all whitespace with a single space and remove leading and
// trailing whitespace
// Note this is intended for single-line strings, no newlines
def normalized(s: String): String = {
require(!s.contains("\n"))
s.replaceAll("\\s+", " ").trim
}
}
abstract class FirrtlPropSpec extends PropSpec with PropertyChecks with FirrtlRunners with LazyLogging
abstract class FirrtlFlatSpec extends FlatSpec with Matchers with FirrtlRunners with FirrtlMatchers with LazyLogging
/** Super class for execution driven Firrtl tests */
abstract class ExecutionTest(name: String, dir: String, vFiles: Seq[String] = Seq.empty) extends FirrtlPropSpec {
property(s"$name should execute correctly") {
runFirrtlTest(name, dir, vFiles)
}
}
/** Super class for compilation driven Firrtl tests */
abstract class CompilationTest(name: String, dir: String) extends FirrtlPropSpec {
property(s"$name should compile correctly") {
compileFirrtlTest(name, dir)
}
}
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